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Finding the Third Proportional to 321,080 and 508,836

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Solution

The third proportional to 321,080 and 508,836 is: 806,384.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,080 : 508,836 = 508,836 : x
  2. Step 2: Convert to fraction form
    321,080/508,836 = 508,836/x
  3. Step 3: Cross multiply
    321,080x = 508,836 × 508,836
  4. Step 4: Simplify right side
    321,080x = 258,914,074,896
  5. Step 5: Solve for x
    x = 258,914,074,896/321,080
  6. Step 6: Final answer
    x = 806,384.93

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.